able to understand and reason well
"is there intelligent life in the universe?"
"an intelligent question"
"well-informed readers"
"healthy scepticism"
"a healthy fear of rattlesnakes"
"the healthy attitude of French laws"
"healthy relations between labor and management"
"an intelligent solution"
"a sound approach to the problem"
"sound advice"
"no sound explanation for his decision"
Those planets in which intelligent forms have arisen.
出自: C. Sagan
Unit officers were considered intelligent enough to be able to take in the facts.
出自: A. Burgess